| HS Code | 784174 |
| Product | Prodways PA12-CF 6500 Powder for Laser Sintering |
| Material | Polyamide 12 (PA12) reinforced with carbon fiber |
| Color | Black |
| Fiber Content | 15% carbon fiber |
| Average Particle Size D50 | 55 µm |
| Bulk Density | 0.42 g/cm³ |
| Part Density | 1.08 g/cm³ |
| Tensile Strength | 75 MPa |
| Tensile Modulus | 6500 MPa |
| Elongation At Break | 3.6% |
| Flexural Modulus | 5500 MPa |
| Heat Deflection Temperature 0 45 Mpa | 175 °C |
| Melting Temperature | 180 °C |
As an accredited Prodways PA12-CF 6500 Powder for Laser Sintering factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied in a sealed 10 kg container of black PA12-CF powder for laser sintering, with moisture-barrier lining and clear handling labels. |
| Container Loading (20′ FCL) | 20' FCL: PA12-CF 6500 powder packed in sealed drums/pails, palletized, unitized, and containerized safely for laser sintering. |
| Shipping | Ships in sealed, moisture-barrier packaging to maintain powder quality and flowability. This carbon-fiber-reinforced nylon powder typically requires no hazardous goods declaration for ground transport, but must be kept dry and away from ignition sources, as fine dust may form explosive mixtures. Avoid inhalation and static buildup during handling. |
| Storage | Store Prodways PA12-CF 6500 powder in its original, sealed container in a cool, dry, well-ventilated area. Protect from moisture, direct sunlight, and excessive heat. Keep tightly closed when not in use and avoid exposure to humidity, which can degrade powder flow and part quality. Follow manufacturer guidelines for optimal shelf life. |
| Shelf Life | Shelf life is typically 12 months from manufacture if stored sealed, dry, and cool. |
In underhood thermal cycling where carbon-filled polyamide 12 replaces die-cast aluminium brackets, the sintered PA12-CF 6500 powder bed exhibits anisotropic mechanical response that must be captured before CAE correlation. The manufacturer-listed XY tensile modulus for this grade is approximately 6500 MPa, while Z-direction values can be 15–25% lower due to incomplete interlayer coalescence. Primary tensile load paths are therefore aligned parallel to the build plane, and any through-thickness load-bearing boss is reinforced with a tapered wall section of at least 2.5 mm to reduce delamination risk at the layer interface. Built-in bosses for metal threaded inserts require a minimum outer diameter of 6.0 mm and a pilot hole undersized by 0.3 mm to allow reaming after sintering.
Compliance for underhood brackets follows heat aging under ISO 175 after immersion in engine oil, brake fluid, and glycol-based coolant, with conditioning times of 500–1,000 h at 85 °C. Short-term stress-cracking resistance is screened using ISO 22088-3 bent strip specimens exposed to a 1.0% strain level. Thermal-oxidative stability of the recycled powder is monitored by differential scanning calorimetry; separate production lots are quarantined when the oxidation onset temperature shifts by more than 10 °C from the virgin reference under ISO 11357-6. The powder blend is refreshed with 30–50% virgin material after each build; lower virgin fractions concentrate residual carbon fiber bundles in the recycled fraction, increase melt viscosity, and trigger recoater streaks along the Y-axis. Processing on a production laser sintering system uses a layer thickness of 0.10–0.12 mm, a build chamber setpoint near 170–175 °C, and a cool-down rate below 1.0 °C/min after the final layer to minimize curl.
Terminal underhood parts include turbocharger inlet duct brackets, intercooler end-tank locators, and wiring harness stand-offs that must retain clamp load after repeated hot-wet cycles. Field data from production lines indicate that uncontrolled powder storage above 60% RH increases surface porosity on thin vertical walls, with the defect rate rising from 2% to 6% in un-dried recycled feedstock. A pre-drying step at 80 °C for 4–6 h is therefore mandatory when the ambient humidity exceeds 60% RH.
Unmanned aerial vehicle air intake plenums produced from PA12-CF 6500 gain mass reduction over aluminium without sacrificing flow-path rigidity, but the Z-direction duct wall thickness remains the primary processing limit. The carbon-filled grade has a sintered density of approximately 1.25–1.35 g/cm³, compared with 2.7 g/cm³ for aluminium. Internal channels narrower than 8.0 mm require compressed-air depowdering and low-frequency vibration, while thin walls below 1.5 mm risk collapse during hot build and post-sintering crystallization. Compliance for airframe interiors references 14 CFR 25.853 flame resistance for non-structural interior materials and ASTM D638-14 tensile coupon data generated at 23 °C ± 2 °C. Because the carbon fiber loading raises the melt viscosity, a slow recoating speed of 150–250 mm/s is used to prevent short-packing at the leading edge of the duct.
The feedstock blend for thin-wall ducting is maintained at a 40–50% virgin refresh ratio, with used powder sieved through a 125 µm mesh to remove agglomerated carbon fiber clusters. Build orientation is rotated 15–20° in the XY plane to prevent scan path resonance from aligning with the duct’s longitudinal axis, because aligned laser scan paths along the part boundary can create periodic stiffness variations. Post-build, parts receive glass bead blasting at 0.3–0.5 MPa and are conditioned at 80 °C for 4 h under vacuum before adhesive bonding. Terminal parts include ram-air intake throats, pitot-static mounting brackets, and antenna housings on fixed-wing surveillance airframes. Published data for long-term UV stability of carbon-filled PA12 in direct sunlight remains limited; unpainted parts should therefore receive a UV-stable polyurethane topcoat meeting ISO 12944-2 category C3 or higher.
Because carbon-filled PA12 exhibits a specific stiffness close to aluminium at roughly 40% of its density, robotic gripper fingers and end-of-arm tooling represent a primary downstream segment for PA12-CF 6500. The carbon-filled grade’s sintered density of approximately 1.25–1.35 g/cm³ places the mass of a typical palletizer jaw at 1.2–1.5 kg, versus 3.0–3.5 kg for a machined aluminium equivalent. The design rules differ from metal machining: load-bearing fingers require a minimum shell thickness of 3.0 mm in compression zones, and vacuum channels should be printed with an internal diameter of at least 4.0 mm to permit consistent depowdering. Compliance for industrial automation components is anchored to ISO 9409-1 for robot tool mounting interfaces and ISO 178:2019 for flexural modulus determination; wear testing follows ASTM G133 for reciprocating sliding contact. The powder blend is recirculated at a 35–45% virgin refresh rate because fine carbon particulate in the used fraction increases electrostatic charge on the recoater blade, causing streaks along the Y-axis. On production machines, the build chamber is purged with nitrogen until oxygen concentration drops below 1.0%, and the powder bed temperature is held within ±2 °C of the target to prevent curl. Terminal parts include packaging end-effector fingers, palletizer clamp jaws, and depanner gripper inserts. Tooling with threaded metal inserts uses heat-stake insertion at 220–240 °C to avoid fiber-rich micro-cracks around the insert boundary.
Orthotic shells and prosthetic check sockets produced from PA12-CF 6500 powder beds require a different risk profile because the device contacts skin for prolonged periods. The carbon-filled grade is not positioned as a permanent implant polymer; biocompatibility testing for external skin-contacting devices typically follows ISO 10993-5 and ISO 10993-10 at the component level, while mechanical evaluation uses ISO 527-2 tensile specimens and ISO 75-2 heat deflection temperature. For ankle-foot orthosis shells, the blend ratio is shifted toward 50% virgin powder to maintain consistent layer fusion across patient-specific thin sections that can drop to 2.0 mm at the lateral strut. Layer thickness is set to 0.10 mm to capture the fine edge features of scanned limb geometry. A critical process constraint is residual powder trapped inside lattice regions; orthoses with ventilation channels must have openings no smaller than 5.0 mm to allow mechanical depowdering without manual drill-out. Terminal parts include custom AFO shells, prosthetic check sockets, and spinal alignment jig housings. The sintered parts are post-annealed at 110 °C for 30 min in a forced-air oven to relieve stress before trimming with carbide burrs. For prosthetic check sockets, the printed socket is loaded into a vacuum forming station and used as a male mold at temperatures below 160 °C; prolonged exposure above that point softens the PA12 matrix and distorts the molded thermoplastic. The carbon fiber filler reduces the coefficient of thermal expansion compared with unfilled PA12, which improves dimensional agreement between the scanned residual limb and the check socket but also lowers fracture toughness; sockets subjected to impact are therefore reinforced with a 3.0 mm distal cup wall.
Motorsport intake plenums and battery brackets place PA12-CF 6500 under vibration-driven fatigue at under-panel temperatures up to 85 °C. The feedstock is commonly processed with a 0.12 mm layer thickness to reduce build time for plenum geometries that span 300–400 mm in the longest axis. Compliance data for this segment are generated using ISO 527-1 tensile tests at 80 °C, ISO 6721-11 dynamic mechanical analysis to identify the glass transition onset near 50–60 °C, and ISO 175 immersion in unleaded gasoline blends. Vibration survival is checked on a shaker table with sine sweeps from 20 Hz to 500 Hz per ISO 16750-4, with the plenum assembly fixed through the same isolators used in the vehicle. The powder blend is managed with a 30% virgin refresh ratio only when used powder is continuously sieved in-line at 125 µm; otherwise the virgin fraction is raised to 50% to avoid brittle fracture at the plenum inlet flange. Build orientation places the intake runner axis at 30° from the recoating direction, which reduces shear-induced porosity where the runner joins the plenum body. Terminal parts include carbon-fiber-reinforced nylon intake plenums, lithium-ion battery enclosure brackets for motorcycle electric conversion kits, and ECU protective housings. Surface sealing with an epoxy primer is required on intake plenums to prevent fuel vapor absorption into the PA12 matrix, which can lower tensile strength by 8–12% after repeated hot-wet cycling.
For flow metering skids operating in hydrocarbon-rich atmospheres, protective covers and calibration jigs built from PA12-CF 6500 must demonstrate dimensional stability under fluctuating humidity and chemical exposure. The carbon-filled polyamide 12 matrix absorbs 0.8–1.2% moisture at equilibrium in 23 °C / 50% RH, and this absorption can produce a length change of 0.10–0.15% compared with dry-as-built dimensions. Compliance is therefore checked using ISO 62 water absorption and ISO 1110 accelerated moisture conditioning, while stress-cracking resistance is screened under ASTM D1693 in the relevant hydrocarbon condensate. Surface resistivity of the sintered part is measured per IEC 61340-2-3; non-sparking alignment tools are accepted only when surface resistivity is below 1 × 109 Ω to dissipate static charge before contacting hydrocarbon vapour. The recycled powder fraction for these jigs is limited to 20–30% used material, because a dimensional tolerance of ±0.15 mm over a 200 mm bore centre distance leaves little margin for anisotropic shrinkage. Processing uses a slow cool-down rate of 0.5–1.0 °C/min in the build chamber after the last layer, followed by air cooling to ambient. Terminal parts include orifice plate positioning jigs, inspection cover housings for gas chromatograph enclosures, and non-sparking alignment tools.
Consumer drone subassemblies represent a high-volume segment in which PA12-CF 6500 must offer repeatable thin-wall cosmetics and clean inner channels for wire routing. The design envelope is typically constrained by a minimum wall thickness of 1.2 mm for gimbal brackets and 1.8 mm for crash-protection ribs. Impact toughness at low temperature is the dominant compliance gate: ISO 179-1/1eU Charpy unnotched impact strength is compared at 23 °C and -10 °C to ensure brittle failure does not occur during cold-weather flight. Powder refresh rates of 50% virgin material are commonly used for cosmetic surfaces, because recycled carbon-filled PA12 tends to produce mottled grey surface tones that are unacceptable for exposed brackets. Sintering uses reduced laser power on contour passes, with contour scan spacing tightened to 0.20 mm to improve edge definition. Terminal parts include gimbal isolation mounts, sensor module housings, and antenna mast clips. Published data for high-volume production scrap rates specific to PA12-CF 6500 in cosmetic drone parts is limited; process capability studies should therefore be repeated when virgin powder lot numbers change.
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Prodways PA12-CF 6500 Powder for Laser Sintering is a carbon-fiber reinforced polyamide 12 feedstock developed for selective laser sintering platforms using CO₂ laser sources in the 60–130 W class. The 6500 designation corresponds to a filled tensile modulus class centered near 6,500 MPa when tested according to ISO 527-2 on printed specimens. The powder is supplied as a dry, free-flowing material with a particle size distribution compatible with 100–120 µm layer thicknesses. The semi-crystalline polyamide 12 matrix carries chopped carbon fiber reinforcement selected to maintain flow under recoating and to reduce electrostatic aggregation. Compared with unfilled PA12, the carbon-filled grade reduces elongation at break to approximately 2.5%–4.0%, raises low-load heat deflection temperature, and increases printed part density to the 1.03–1.10 g/cm³ range. The material is specified for functional prototypes, assembly fixtures, inspection gauges, automotive brackets, and short-run production parts in which unfilled PA12 exhibits excessive deflection under load or thermal creep.
The transition from unfilled PA12 to carbon-filled PA12 alters both mechanical response and processing limits. Parts built from this powder exhibit higher stiffness and lower toughness, but the material also requires tighter control of bed temperature, laser energy density, recycle ratio, and recoater condition. These requirements place the product among structural laser sintering feedstocks rather than general-purpose prototyping powders. The following technical sections define the processing boundaries and comparative properties relevant to machine qualification and part design.
Under tensile loading, the carbon fiber changes the failure mechanism from ductile yielding to quasi-brittle fracture. Representative values for the PA12-CF 6500 class show a tensile modulus between 6,000 MPa and 6,500 MPa and tensile strength between 55 MPa and 65 MPa under ISO 527-2. Elongation at break is reduced from 15%–25% for unfilled PA12 to 2.5%–4.0% for the carbon-filled grade. The low elongation excludes snap-fit, living-hinge, and high-impact closure applications. The high modulus, however, is useful for brackets, fixtures, and structural housings that require resistance to flexural deflection under sustained load.
Flexural modulus under ISO 178 is reported in the 5,500–6,000 MPa range. Heat deflection temperature at 0.45 MPa under ISO 75-2 is typically between 150 °C and 165 °C, with fiber orientation and part density influencing the upper bound. Melt flow rate measured at 235 °C/5 kg under ISO 1133-1:2022 is lower than for unfilled PA12 and often falls below 10 g/10 min. This rheological shift reduces interlayer coalescence and narrows the sintering window. Laser diffraction analysis under ISO 13320-1 typically yields a D50 between 45 µm and 55 µm and a D90 below 100 µm. Apparent bulk density under ASTM D1895 is generally between 0.42 g/cm³ and 0.50 g/cm³.
The powder should not be blended with dry flow aids or external lubricants unless specifically approved by the supplier. Additional flow additives can alter melt rheology and reduce interlayer adhesion. Dedicated handling tools, bins, and sieves are required to avoid cross-contamination with unfilled PA12 or glass-filled powders. Mixed contamination can produce visible streaks and unpredictable mechanical properties during production campaigns.
| Property | PA12-CF 6500 class | Unfilled PA12 | Test method |
|---|---|---|---|
| Tensile modulus | 6,000–6,500 MPa | 1,500–1,800 MPa | ISO 527-2 |
| Tensile strength | 55–65 MPa | 40–50 MPa | ISO 527-2 |
| Elongation at break | 2.5–4.0% | 15–25% | ISO 527-2 |
| Flexural modulus | 5,500–6,000 MPa | 1,400–1,600 MPa | ISO 178 |
| Heat deflection temperature at 0.45 MPa | 150–165 °C | 145–175 °C | ISO 75-2 |
| Printed part density | 1.03–1.10 g/cm³ | 0.95–1.01 g/cm³ | ISO 1183-1 |
Sieving and conditioning of the powder before loading is required when the storage environment exceeds 60% relative humidity. Moisture uptake above 0.1 wt% produces gas porosity during the melt phase and lowers tensile strength. The recommended drying protocol is 80 °C for 12–24 h in a dry-air oven; processing without drying may create surface voids and reduce part density. After building, the powder cake should cool in the chamber under nitrogen or dried air until the part temperature is below 80 °C before breakout. Slow cooling limits oxidative yellowing, internal stress, and warpage in large flat parts.
On production SLS systems, the principal operational bottleneck is not laser scan speed but recoater maintenance. Carbon fiber is abrasive to standard tool-steel recoater blades. Hardened steel, tungsten carbide, or ceramic-coated blades are recommended for campaigns exceeding 200 build hours. Recoater flatness should be checked at the start of each build, and the powder bed should be inspected for streaking. Streaking caused by fibers or agglomerates can create localized energy density changes and produce off-spec tensile bars. Used powder should be sieved through a 150 µm mesh during recycling; sieve residue should be discarded rather than returned to the feedstock.
Batch-to-batch variance in melt flow rate is typically controlled to within ±2 g/10 min under ISO 1133-1. Tensile bars printed on the target machine should be used for lot acceptance because injection-molded values do not represent the anisotropic SLS structure. If static dissipation is required, surface resistivity must be evaluated on printed coupons under IEC 60093. Published data for this specific configuration are limited, and carbon-fiber orientation produces anisotropic electrical response across the build plane and through the layer thickness.
The part-bed temperature window for carbon-filled PA12 is narrower than for unfilled PA12 because the fiber filler increases melt viscosity and thermal conductivity. A setpoint between 170 °C and 185 °C is typical; temperature uniformity should be held within ±1.5 °C across the build area. At bed temperatures above the upper limit, powder can partially sinter in the cake, producing excessive part growth and rough sidewalls. At temperatures below the lower limit, curl and delamination occur due to differential shrinkage between the molten layer and already solidified material.
Laser energy density should be reduced by 10%–20% when changing from unfilled PA12 to the carbon-filled grade on the same machine. Energy density is calculated from laser power divided by the product of scan speed and hatch spacing. Carbon fiber increases laser absorptivity, and excessive energy density can produce local overheating, void formation, and polymer degradation. Optimal parameters are machine-dependent and must be established through a calibration matrix covering laser power, scan speed, hatch spacing, beam offset, and bed temperature. Direct transfer of unfilled PA12 parameters without calibration is not recommended.
Thick sections above 6 mm wall thickness are more susceptible to residual stress and Z-axis delamination in carbon-filled PA12 than in unfilled PA12. A controlled cool-down rate of no more than 1 °C/min is commonly applied until the part-bed temperature falls below 130 °C. Breakout before this temperature can cause warpage in long, thin parts. The cooling curve depends on machine model, packing density, and part geometry, but the constraint is more stringent than for unfilled PA12. Operators should record the cooling curve as part of batch records for critical structural parts.
The usable refresh ratio for carbon-filled PA12 is not a fixed value and differs from unfilled PA12 because fiber segregation, fiber fracture, and oxidative chain growth occur during repeated thermal exposure. In production practice, used PA12-CF 6500 powder is typically blended with 40%–50% virgin material. Virgin powder fractions below 30% may lead to mechanical property drift, higher porosity, and inconsistent sidewall roughness in long campaigns. The exact refresh ratio should be adjusted using the melt flow rate of the recycled powder. A decline of more than 20% from the virgin powder melt flow rate under ISO 1133-1:2022 indicates oxidative crosslinking or chain extension; the aged fraction should be removed or the virgin fraction increased.
Carbon-fiber orientation is scan-direction dependent, and mechanical anisotropy of the printed part is greater than in unfilled PA12. Fibers lie predominantly in the X-Y plane of each layer, which raises in-plane modulus but limits Z-direction consolidation. For this reason, Z-direction tensile strength and through-thickness fatigue behavior should be derived from printed test coupons rather than datasheet values. Published data for the Z-direction performance of the specific 6500 grade are limited, so applications with through-thickness structural loads require on-machine qualification builds. Scan strategy can reduce anisotropy but cannot eliminate it entirely.
The same refresh limitations affect surface finish. Recycled powder containing accumulated fiber fines can produce rougher sidewalls and higher porosity. Sieving through a 150 µm mesh removes oversize agglomerates but does not restore the original particle size distribution. Critical cosmetic surfaces may require a dedicated virgin powder lot or a higher virgin refresh fraction. Production facilities running continuous campaigns should maintain a recycling log that records cycles, sieve residue mass, melt flow rate, and tensile bar results after each refresh.
Any design comparison with carbon-filled injection-molding compounds of similar modulus should account for the layer-wise fusion process. SLS parts contain porosity and anisotropic strength that are absent from homogeneous injection-molded specimens. Mechanical testing should use printed coupons conditioned at 23 °C and 50% relative humidity for at least 40 h under ISO 291. Test orientation, build orientation, and part thickness must be recorded, especially for sections below 2 mm where fiber packing may differ from the bulk material.
Batch certification for the powder should include particle size distribution under ISO 13320-1, melt flow rate under ISO 1133-1, and tensile properties printed on the target machine under ISO 527-2. Density measurement should follow ISO 1183-1 for printed parts and ASTM D1895 for apparent bulk density. Compliance with REACH and RoHS should be confirmed through the supplier certificate; users remain responsible for TSCA or other regional chemical obligations if the powder is imported into additional jurisdictions. The material is not intended for direct food-contact or implant use unless subjected to application-specific regulatory review. Compared with unfilled PA12, the carbon-filled grade offers higher specific stiffness and improved creep resistance but sacrifices toughness and forms rougher surfaces. Compared with glass-filled PA12, the carbon-fiber system provides lower part density and lower abrasive wear on post-processing tools but may show greater mechanical anisotropy. Compared with high-temperature laser sintering powders such as PEEK, the continuous-use temperature ceiling of PA12-CF 6500 remains below 120–130 °C under sustained mechanical load. Compared with aluminum-filled PA12, the carbon-fiber system is lighter and less abrasive but may exhibit higher moisture sensitivity if not dried.
